Mejri’s guarantee would seem to give him a leg up, but Dallas hasn’t shied from eating guaranteed contracts in the past. He’ll have to earn his roster spot in training camp just like everyone else.

Mejri is a 29-year-old, 7-foot-2 center who played for Real Madrid last season and represented Tunisia in the 2012 London Olympics. He uses his size relatively well on both ends of the floor – finishing at the rim, defending the paint and crashing the glass – but facing NBA athleticism will be a major adjustment.

The Mavericks are desperate at center after DeAndre Jordan reneged and re-signed with the Clippers. Maybe Mejri will help. The best thing I can say about him: Dallas believed in him enough to fully guarantee his 2015-16 salary. That’s either a positive signal or sign of desperation – or maybe a bit of both.

Q: The Knicks drafted Kristaps Porzingis, a guy who is a couple years away from being able to help you win night in and night out. Then there’s Carmelo Anthony, who is 31 and here for another four years. How does he fit in because it seems like they are looking at a future that might not fit within his window?

A: I’m sure Melo wasn’t happy. His future is now. You know, he’s not getting younger. This is going to be a pivotal season for him to see really how he fits into the Knick plans and how this is going to go from here. Will he ask out, you know what I mean, if he sees that this is not happening? Because right now the Knicks, [it’s] going to be tough to make the playoffs. They are a few years away and Melo knows that his days are numbered, so stay tuned.

Perhaps, Frazier is just speculating. He doesn’t cite any specific conversations with Melo. Frazier just explaining his perception of Melo’s attitude.

But Frazier spends a lot of time around Melo, and his playing success would help him connect to Melo. We should put credence in his assessment, even if I wouldn’t trust it completely.

Even if Melo wants a trade, it wouldn’t necessarily be easy. Teams might not rush to trade for someone due more than $101 million over the next four years, on the wrong side of 30 and coming off major injury. Melo also has a no-trade clause, which could limit his potential suitors even further.

Dedmon is big (7-foot, 245 pounds), and he plays like it. He blocks shots, pulls in rebounds and fouls a ton. He’s underdeveloped offensively, but his size allows him to contribute.

He spent most of last season in the Magic’s rotation, even starting 15 games. Orlando should aim for Dedmon to improve or for him to see a smaller role this year.

The window for Dedmon to hit the next level is slowly closing, though it’s more open than it would be for the typical player who turns 26 next week. Dedmon didn’t begin playing basketball until late in high school, indicating he could blossom a little later, too.

He has already proven himself worth a minimum contract to provide center depth. The chance he improves made this an easy call for the Magic.

On the other hand, Vujacic played well for Phil Jackson’s Lakers six years ago.

It’s possible the Knicks didn’t give Vujacic a guaranteed contract, but merely a chance to prove himself in training camp. If so, there’s little downside to this move, and maybe Vujacic helps better players learn the triangle offense. If not, they’re wasting a roster spot on a player who seems unlikely to help them on the court now or in the future.

Either way, this shouldn’t preclude the Knicks from also signing Thanasis Antetokounmpo. Antetokounmpo will give the Knicks with much-needed potential for future seasons. They also need better outside shooters – which Jackson may or may not realize – and Vujacic could theoretically provide that.

He’s an energy player whose length and athleticism give him nice defensive potential. As far as projects go, the Knicks have one who probably warrants further investment.

Depending on order of transactions, New York might have a sliver of cap space, which it could to sign Antetokounmpo to a three- or four-year contract. The final seasons surely wouldn’t be fully guaranteed, and a long-term deal would give the Knicks value if Antetokounmpo pans out. If they don’t have space, they’d be limited to a two-year deal with the room exception or minimum-salary exception.